How to check DataRowView null or not.

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How to check DataRowView null or not. I got error "The source contains no DataRows" here.

if (e.Row.RowType == DataControlRowType.DataRow)
            {
                DataRowView drView = (DataRowView)e.Row.DataItem;
                {
                    DataTable dtChildTable1 = ((DataTable)Session["dtAll"]).Select("ID=" + Convert.ToInt32(drView["ID"])).CopyToDataTable();
}

Posted 28-Jul-11 4:09am

divesh12

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parmar_punit · Answer 1 · 2011-07-28T04:25:00

Its better if you use boolean AND operator as follow

MSIL

if (if e.Row != null && e.Row.RowType == DataControlRowType.DataRow)
{
    DataRowView drView = (DataRowView)e.Row.DataItem;
    {
         DataTable dtChildTable1 = ((DataTable) Session["dtAll"]);
         if(dtChildTable1 != null)
         {
              DataTable dtNew = dtChildTable1.Select("ID=" + Convert.ToInt32( drView["ID"])).CopyToDataTable();
         }
    }
}

 Or <br />
you can create a reference to the DataRow[] Array instead of dtNew variable of or better to use var

Abhinav S · Answer 2 · 2011-07-28T04:27:00

Solution 2

Try (drView.Row != null).

Posted 28-Jul-11 4:27am

Abhinav S

Comments

divesh12 28-Jul-11 13:58pm

Thanx but still the error is same "The source contains no DataRows" here.

Monjurul Habib · Answer 3 · 2011-07-28T07:12:00

Solution 3

Follow the links

http://msdn.microsoft.com/en-us/library/system.data.datarow.isnull.aspx[^]

http://msdn.microsoft.com/en-us/library/ms178296%28v=vs.80%29.aspx[^]

Posted 28-Jul-11 7:12am

Monjurul Habib

Updated 28-Jul-11 7:18am

v2